High index photo grey eyeglasses lenses 1.67 AR coating photochromic lens safety glasses

High index photo grey eyeglasses lenses 1.67 AR coating photochromic lens safety glasses

I. Specifications:

II. Photochromic Film Lens:

Photochromic film lenses are available in nearly all lens materials and designs, including high indexes , bifocal and progressive. An added benefit of photochromic lenses is that they shield your eyes from 100 percent of the sun's harmful UVA and UVB rays.

Because a person's lifetime exposure to sunlight and UV radiation has been associated with cataracts later in life, it's a good idea to consider photochromic lenses for children's eyewear as well as for eyeglasses for adults.

• Temperature And Its Effect On Photochromic Technology

The molecules in photochromic technology work by reacting to UV light. However, temperature can have an effect on the reaction time of the molecules. When the lenses become cold the molecules begin to move slowly. This means that it will take somewhat longer for the lenses to adapt from dark to clear. When the lenses become warm the molecules speed up and become more reactive. This means that they will fade back faster. It can also mean that if you’re outside on a hot sunny day, but sitting in the shade, your lenses will be quicker to detect the diminished UV rays and lighten in color. Whereas, if you are outside on a sunny day in a cold climate, and then move into the shade, your lenses will adjust more slowly than they would in a warm climate.

The Time For Photochromic Film Lenses Taking To Change Colour or React Photochromic film lenses, when exposed to sunlight/UV rays, will on average take approx 30 seconds to a minute to darken and will continue to darken for a further 10 minutes to full sunglasses tint/shade, returning to an almost clear state within 2 minutes and fully cleared within 5 minutes although excess temperature will affect this.

• The Benifit Of Wearing Photochromic Glass

Wearing eyeglasses can often be a pain. If it's raining, you're wiping water off the lenses, if it's humid, the lenses mist up; and if it's sunny, you don't know whether to wear your normal glasses or your shades and you may have to keeping switching between the two! Many people who wear eyeglasses have found a solution to the last of these problems by changing over to photochromic lenses

III. Coating Choice:

Hard Coating: It also can be also anti-scratch coating, its purpose to help the lenses be destoried. HMC EMI Coating : It also can be called anti-reflection(AR) coating or hard multi coating, the technology is coating another anti-reflective coating on the hard coating. Its purpose to perfectly reduce harmful ray and enhance the vision effect. Super hydrophobic coating: It also can be called crazil coating, it takes the lenses waterproof, antistatic, anti slip and oil resistance which can keep half one year ~one year.

IV. Packing&Shipping:

V. Our factory:

VI. Purchase Process:

1. If you need the samples, we will check the samples fee and the shipping cost, and we will delivery the samples to you in three days after we receive the payment.

If you do not need the samples, we can send the price list to you.

2. If you are satisfied with our samples or the price list, you can show us your order list.

3. We will do a proforma invoice which show you the total cost including the goods fee, shipping cost, the size of the lenses and some other important information.

4. We will start the order when we receive your despoit, the 30% of the total cost.

5. We need about 15~40 days to produce the order which up to your quantity, and keep update the producing process to you in time.

6. When we finish the producing, we will inform you to pay for the rest of the money. And we will delivery to you asap when we receive the balance.

7. We will offer the tracking number and the documents for you to clearance at customs.

VII. Certifications:

VIII. Contact us: